Teaching goals 教学目标
1. Target language 目标语言
a. 重点词汇和知识
archaeology, accurate, radioactivity, chronological, excavation, identify, alternative, household, date back to
b. 交际用语
Practice giving opinions and describing objects
I think that we should... because...
I suggest we...
If..., then maybe we ought to...
Perhaps we should / could...
We must ask for help from...
What if...?
It seems likely / unlikely that...
It looks like...
It could be... because...
How large do you think it is?
Is there any... on the...?
It may / might have been used as / for...
